DZQ Series High Resolution Seismograph (Shallow-Layer Seismograph) for Reflection and Refraction Exploration
DZQ Series High Resolution Seismograph (Shallow-Layer Seismograph)
Main Applications
Reflection and Refraction Exploration: Bedrock embedded depth, shape and regularities of distribution research, hydrological and engineering and environmental geological basic investigation.
Surface Wave Prospecting: Cover layer investigation; weathering zone investigation; underground cavity and diseased geologic body survey; subgrade, levee, slope disease investigation.
High-density Multi-wave Seismic Imaging: Cavity investigation of ground base and subgrade (roadbed), cave surveying, etc.
Quality Inspection of Civil Engineering; Bridge pier and building pile foundation detecting, etc.
Safety Evaluation of City Blasting Vibration: All kinds of safety monitoring of blasting vibration.
Shear Wave Velocity Test: Measurement of rock mass elasticity parameters, etc.
Main Features
Adopt the latest high-speed, high-precision real 24-bit A/D converter. Maximum sampling interval for 48 channels in simultaneous sampling is 31.25us, reaching international advanced level.
Maximum sampling interval for single channel is up to 10us.
Not only use the advanced wave filter with ultra-low distortion performance, better than 120 dB, with external suppression (cut-off frequency automatically changes with sampling frequency); meanwhile, various digital wave filters (high, low, band pass wave filters) are set in the software, with their cut-off frequency being set artificially.
Support coverage measurement;
Provided with overlaying switch and overlaying cable manufactured by our factory, the application in various reflection, refraction, reflex measurement for field exploration can be facilitated, thus greatly improving the efficiency of field work.
DZQ48 high-resolution seismograph can support 12-channel and 24-channel overlaying measurement without external configuration
Main Technical Specifications
Computer Configuration: PC104 Control Computer P4 (933MHz); Memory: 256MB; Hard Disk: no smaller than 80GB; Operating System: win-XP
Display: 1024X768 DOT matrix, high brightness TFT (true color) LED.
Input Device: Equipped with suitable field-use membrane keyboard and touch screen; can also be connected with PS / 2 computer keyboard and mouse; provided with handwriting tablet.
Interface: Dual USB interface, PS/2 keyboard, mouse interface, parallel port, Ethernet port, etc.
Removable Storage: USB disk, or adopting mobile hard disk drive, USB mobile drive, etc.
Frequency Response Range: 0.1Hz~4kHz
Noise: smaller than 1 μV at full-frequency state
Sampling Time Delay: 0~9999ms
Conformity: amplitude conformity better than ±0.02%; phase conformity: better than ±0.01ms
Sampling Rate: 10μs/31.25μs/62.5μs/125μs/250μs/500μs/1 ms/2 ms/4 ms/8 ms/16ms/32ms-400ms several taps
Number of Sampling Points: 512, 1024, 2048, 4096, 8192, 16384, etc., maximum record up to 32768;
Preamplifier Gain: Every six channels as a group, optionally chosen by software: 64 times (36dB), 16 times (24dB), 4 times (12dB), 1times;
A/D Converter: Adopt the latest, ultra high speed Σ-Δ24 bit A/D converter;
Alias Filter: Automatic tracking along with the sampling rate; -3dB, down to 120dB at the place with 0.216 times of sampling rate; and provided with various digital wave filters, cutoff frequency (at the place with -3dB) if required
Supported Data Format: SEG-2, SEG-Y, CSP
Trigger Mode: Internal and external triggered by hammer switch; triggered via blasting, and electric spark; also triggered by wire-breaking or connecting
Power Supply: 12V±20% battery-powered; smaller than 4 AMPS (48 channels, 5 AMPS when LCD working in extra-brightness).
Service Environment: -10°C~ +55 °C; Humidity 90%RH
Volume: 390×270×190mm
Weight: 18kg
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